Title (en)

ELECTRICALLY INSULATING MATERIAL COMPRISING STRETCHED POLYPROPYLENE FILM

Publication

EP 0227300 A3 19880330 (EN)

Application

EP 86309043 A 19861119

Priority

JP 26220385 A 19851120

Abstract (en)

[origin: EP0227300A2] An electrically insulating material comprises a film obtained by at least uniaxially stretching an extruded polypropylene sheet containing from 0.05 to 10,000 ppm by weight of a polymer of a 3-branched alpha -olefin having 6 or more carbon atoms and/or a vinylcycloalkane having 6 or more carbon atoms in terms of a monomer unit thereof. The electrically insulating material has a high dielectric breakdown voltage and is suitable for producing small-sized condensers.

IPC 1-7

H01B 3/44; C08L 23/12

IPC 8 full level

B29C 55/02 (2006.01); C08F 4/64 (2006.01); C08J 5/18 (2006.01); C08L 7/00 (2006.01); C08L 21/00 (2006.01); C08L 23/00 (2006.01); C08L 23/02 (2006.01); C08L 23/12 (2006.01); C08L 77/00 (2006.01); C08L 101/00 (2006.01); H01B 3/44 (2006.01); C08L 23/20 (2006.01)

CPC (source: EP)

C08J 5/18 (2013.01); H01B 3/441 (2013.01); C08J 2323/12 (2013.01); C08L 23/20 (2013.01); C08L 2314/02 (2013.01)

Citation (search report)

• [Y] DE 3047153 A1 19820722 - HOECHST AG [DE]
• [Y] EP 0151883 A2 19850821 - SUMITOMO CHEMICAL CO [JP]
• [X] EP 0152701 A1 19850828 - SUMITOMO CHEMICAL CO [JP]

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0227300 A2 19870701; EP 0227300 A3 19880330; EP 0227300 B1 19910925; CA 1290536 C 19911015; DE 3681708 D1 19911031; JP H07101566 B2 19951101; JP S62122009 A 19870603; SG 109794 G 19941125

DOCDB simple family (application)

EP 86309043 A 19861119; CA 522925 A 19861113; DE 3681708 T 19861119; JP 26220385 A 19851120; SG 109794 A 19940808